persistent
adjective
per·sis·tent
pər-ˈsi-stənt 
-ˈzi-
1
: existing for a long or longer than usual time or continuously: such as
a
: retained beyond the usual period
a persistent leaf
b
: continuing without change in function or structure
persistent gills
c
: effective in the open for an appreciable time usually through slow volatilizing
mustard gas is persistent
d
: degraded only slowly by the environment
persistent pesticides
e
: remaining infectious for a relatively long time in a vector after an initial period of incubation
persistent viruses
2
a
: continuing or inclined to persist in a course
b
: continuing to exist despite interference or treatment
a persistent cough
has been in a persistent vegetative state for two years
persistently
adverb
Examples of persistent in a Sentence
Contrary to persistent myth, Hoover was an activist.
—
Steve Forbes, Forbes, 30 June 2008
The high-water mark of such truckling might be the publication of the Cato Institute report "America's Record Trade Deficit: A Symbol of Strength." Freedom had become slavery; persistent deficits had become economic power.
—Eric Janszen, Harper's, February 2008
The silence started from your end just about the time you said good-bye to dear St. Elizabeth and it has been constant and persistent ever since.
—Archibald Macleish, letter, 11 July 1959
We were nagged by a persistent salesman.
He is one of the government's most persistent critics.
She has been persistent in pursuing the job.
He has been fighting a persistent cold.
Flooding has been a persistent problem in the area this year.
Persistent rumors that the business is for sale have alarmed the staff.
Steve Forbes, Forbes, 30 June 2008
The high-water mark of such truckling might be the publication of the Cato Institute report "America's Record Trade Deficit: A Symbol of Strength." Freedom had become slavery; persistent deficits had become economic power.
—Eric Janszen, Harper's, February 2008
The silence started from your end just about the time you said good-bye to dear St. Elizabeth and it has been constant and persistent ever since.
—Archibald Macleish, letter, 11 July 1959
We were nagged by a persistent salesman.
He is one of the government's most persistent critics.
She has been persistent in pursuing the job.
He has been fighting a persistent cold.
Flooding has been a persistent problem in the area this year.
Persistent rumors that the business is for sale have alarmed the staff.
Recent Examples on the Web
Put another way, even though China will remain a persistent and formidable challenger to the United States, and even though much of Southeast Asia seems to be gravitating toward China, Beijing still has a lot of work to do to allay concerns and win the trust of regional states.
—Yuen Foong Khong, Foreign Affairs, 24 June 2025
Despite their diversity, these groups share common threads of systemic exclusion from traditional financial services, contributing to persistent inequities in wealth and opportunity.
—Kevin Cohee, Forbes.com, 24 June 2025
Google’s Threat Intelligence Group identifies Scattered Spider as a financially motivated threat actor known for its persistent use of social engineering and brazen communications with victims.
—Sheryl Estrada, Fortune, 24 June 2025
The study reported that almost half of physicians who were persistent cigarette smokers were killed by their habit, and a quarter died before age 70.
—Scott Lafee, San Diego Union-Tribune, 24 June 2025
See All Example Sentences for persistent
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Yuen Foong Khong, Foreign Affairs, 24 June 2025
Despite their diversity, these groups share common threads of systemic exclusion from traditional financial services, contributing to persistent inequities in wealth and opportunity.
—Kevin Cohee, Forbes.com, 24 June 2025
Google’s Threat Intelligence Group identifies Scattered Spider as a financially motivated threat actor known for its persistent use of social engineering and brazen communications with victims.
—Sheryl Estrada, Fortune, 24 June 2025
The study reported that almost half of physicians who were persistent cigarette smokers were killed by their habit, and a quarter died before age 70.
—Scott Lafee, San Diego Union-Tribune, 24 June 2025
See All Example Sentences for persistent
Cite this Entry
“Persistent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/persistent. Accessed 5 Jul. 2025.
Copy CitationKids Definition
persistent
adjective
per·sis·tent
pər-ˈsis-tənt
-ˈzis-
1
: continuing, existing, or acting for a long or longer than usual time
a persistent cold
persistent gills
2
: stubbornly determined
persistently
adverb
Medical Definition
persistent
adjective
per·sis·tent
-tənt
1
: existing or continuing for a long time: as
a
: effective in the open for an appreciable time usually through slow volatilizing
mustard gas is persistent
b
: degraded only slowly by the environment
persistent pesticides
c
: remaining infectious for a relatively long time in a vector after an initial period of incubation
persistent viruses
2
: continuing to exist despite interference or treatment
a persistent cough
has been in a persistent vegetative state for two years
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